Payback Seatpost Anti-Theft Security Clamp Collar Fortified

While the idea of a secure seat clamp is a nice idea, this implementation doesn’t really work. I found it impossible to tighten the clamp tight enough to keep the seat from slowly sliding down. The wrench doesn’t fit securely into the clamp, so it slips really easily (which has left me with bloody fingers in the middle of a ride). And the wrench is showing signs of wear, so before it won’t work at all I’m just replacing it.

nice product as advertised